Suction-creating apparatus



2 sains-SHEET l'.

B. SKIDMOBE, Jn. SUCTION CREATING APPARATUS APPLICATION FILED IAR. 21.l9l9.

1,382,444, Patented June 21, 1921.

B. SKIDMORE, JR. SUCTION CREATING APPARATUS APPLICATION FILED mm2?.1919.

Patented June 21,' 1921.

2 SHEETS-SHEET 2.

UNITED STATE-s PATENT "'oFFlcE.

.naman-nv summons, Jn., or CHICAGO, IImmoIs.

. ASUGTIIION-CRIF." A'.IING APPARATUS.

Specification of Letters Patent. Patented June 21, 1921.

Application filed March 27, 1919. Serial No.'28v5,488.

T allwwmtrmiy concern.'

Be it known thatl I, BENJAMIN SKIDMORE, Jr., a citizen of the UnitedStates, residing at Chicago, in the county of Cook and Stateof'Illinois, have invented certain-. new land useful Improvements inSuction-Creating 'Apparatus, of which lthe following -is ,aspecification.

This invention relates to improvements in suction creating Aapparatusand one of the objects of the invention isto provide an ims provedlapparatus of -this character for volute shaped passages into vwhich theliquid displaced .by the impeller is discharged and with* which passagesthe conduit or chamber has communication whereby the kinetic energy ofthe liquid vin Vthe volute passages after the impeller has ceasedtodischarge the liquid' thereintowill cause an additional and furthersuction in the fluid conduit or chamber;

To the attainment of these ends and the accomplishment of'other new anduseful objects as will appear the invention consists in the features ofnovelty in substantially. the construction, combination and arrangementof the 'several parts hereinafter more fully describedA and claimed andshown in the accompanying drawing illustrating this invention and inwhich; j,

lFigure 1` isa vertical longitudinal sectional viewjof an Iimprovedapparatus of this character constructed in accordance with the4principles of this invention andas taken on 'line 2 2, Fig,'2.

Fig. 2 is an irregular vertical sectional view as taken on line 2 2,Fig. 1.

Fig. 8 is a view taken on line 3-3, Fig, 2.

Referring more particularly to the draw-l ing the numeral 10 designatesa tank within which the apparatus may be located and this tank isprovided with a fluid outlet The tank may be ofany desired size andconfiguration and supported in any suitable manner such as by means oflegs 12.

Arranged within the tank isa casing u) designated generally lby thereference numeral 13 which is provided with an inlet opening 14 adjacentits center and rotatably mounted -Within the casing is an impellerydesignated generally. by the reference nu- 65- meral :15. This impelleris mounted upon a shaft' 16 journaled in suitable l bearings 17-18,preferably supported by the'walls of the tank and the shaft is adaptedto be rotated by means of a suitable motor 19. l

The impeller preferably embodies a plurallty of impeller blades or wings20 radially disposed and which project beyond the body I of'theimpeller. If desired another set of impeller yblades 21 may be providedon the 75 `impeller intermediate the blades 20. All of these blades arepreferably of a curved shape, the inner ends of. which terminate shortof the axis ofthe impeller and the outer ends yterminate considerablyshort of the periphery of the impeller. The impeller is also providedwith aseries of blades -22 arranged adjacent the periphery thereof toform pockets thereupon. These blades 22 may be disposed at anyangle withrespect to the axis of rotation and are of a length to extend from theperiphery of the impeller 15 and terminate considerably short of theouter ends ofthe blades- 20%21 so as-to form a space 23 intermediate thevconcentric series .90

of impeller blades. The two series of blades lare connectedl with theimpeller for simultaneous rotation and the blades are Soa r ranged thatthe liquid from the tank V10 will enter the casing Y13 through theopening 14 95 to be delivered to the center of the impeller where itwill be caught 'by the blades 20-'21 as the impeller rotates and theseblades will X deliver or discharge the liquid outwardly therefrom 'bycentrifugal action to the 10 pockets formed by the blades 22. The liquidis discharged across the space 23 between the two series of impellerblades, and means are v providedv whereby a suction- 'will be createdina conduit or passage 24. This` may be: ac-

complished in any suitable manner but pref.- erably by means of passages25 which have -communication with the conduit 241:.` These passages 25are'sohaped that the ends 26 f' thereof will extend into the space 23between 110 the series of impeller blades, one'side 27 of these passages26 is open ,as shown more clearly in 2, in the direction of the outerseries of impeller blades 22 while the,

wall of the passages 26v form abutments or baffles which are arrangedadjacent the path of the movement of the outer ends of the, blades 20,21. As the liquid is displaced by o pen portion 27 of the passages 26and thisl will create a suction in the passages 26 which Will/bemanifested in the conduit 24.

Communicating with the casing 13 are a plurality of volute shapedpassages 28, 29, 30, 31, the inlets of which are arranged in closeproximity to -the peri hery of and about the path Vof rotation oi) theimpeiler. The liquid being vdischarged from the peripheral pockets ofthe impeller will be successively delivered into the volute passages28-29-30-31 and the movement or kinetic energy of the liquid in thevolute passages will operate to create a further or additionalsuction inthe passages 26. The liquid and fluid thus delivered by the impellerwill be rdischarged into the tank 10.

While the preferred form of the invention has been. herein shown anddescribed it is to be understood that many changes may be made in thedetails of construction and lin the combination and arrangement of theseveral parts within the scope of the claims without departing from thespirit of this invention.` A What is claimed as new is il. An apparatusof the character described embodying a casing provided with a volutechamber having an inlet and a discharge outlet Jfor the liquid, a rotorwithin the chamber, said rotor embodying a series of impellers, a secondseries of impellers encompassing and spaced from the irst recitedseries, a conduit having a plurality of outlets in communication withthe space betweeii the said'series of impellers, a baille arrangedadjacent each of the outlets of the said conduit, the ends of eachbaffle terminating short of the respective proximateends of the next adjacent baflies, and means -whereby the rotor-may be actuated to deliverthe liquid from' one set of impellers to the-other set and between theends oi the baiies.

I2. An apparatus of the character vdcscribed embodying a rotor, saidrotor' embodying two series of impellers, one of -the seriesencompassing the other and being spaced therefrom, the position of thetwo series of impellers with relation to each other lbeing fixed andconstant, a conduit having an outlet opening communicating with thespace between' the impellers, means for actuating the rotorV to causeone set of impellers to deliver liquid to the other set of impellersacross the space therebetween, and means adjacent the said outletopening of the conduit for interrupting the flow of'liquid from one setof the impellers to the other whereby the discharge of liquid from thesaid other set of impellers as they pass the conduit outlet will createa suction in the said conduit.

3. An apparatus of the character de- Y scribed embodying a rotor, saidrotor embodying two series of impellers, one oi the series encompassing`the other and 'being spacedthereirom, the position of the two series ofimpellers with relation Vto each other being mfixed and constant, aconduit having an'outlet opening communicating with the space betweenthe impellers, means for actuating the rotor to causeA one set ofimpellers to deliver the liquid tothe other set of im .pellers acrossthe space therebetween, and 'means adjacent the said outlet opening ofthe conduit for interrupting 4the' flow of' liquid from one set of theimpellers to the other whereby the discharge of liquid from the saidother set of impellers as they pass the conduit outlet will create asuction inthe said conduit, the last recited means embodying a baiile.projecting intothe space between the two series of impellers and extend-'ing in a dir'ectionr about the axis of rotation of the rotor.

4. An. apparatus of the character degeneral dirotor, whereby thedischarge of liquid from" the outermost series of impellers will createa suctionin the conduit at the said pre--V determined points,

5. An apparatus of the character described embodying a casing having avolute chamber ,therein provided with an inlet and a discharge outletfor liquid; a rotor, said rotor embodying two series of impellers,` oneof the series encompassing the other and being spaced therefrom, theposition of the two series of impellers with relation to each otherbeing ixed and constant, a conduit having an outlet openingcommunicating with the tion will be manifested.

space between the impellers, means for actuating the rotor to cause oneset of impellers to deliver liquid to the other set of impellers acrossthe space therebetween, and means adjacent the said outlet opening ofthe conduit for interrupting the flow of liquid from one set of theimpellers to the other whereby the discharge of liquid from the saidother set of impellers as they pass the conduit outlet will create asuction in the said conduit.

6. An apparatus ofthe character described embodying a casing having avolute chamber, a rotor in said chamber, saidl rotor embodyingaseries ofimpellers, a second series of impellers encompassing and spaced from thesaid first series to form an annular space therebetween, both of thesaid'series of impellers rotating in unison and having a permanent fixedposition with relation to leach other whereby the inner series ofimpellers will deliver iuid to the outer series, means for temporarilyarresting the delivery of the liquid from the inner series of impellersto certain of the outer series of impellers, provisions whereby the flowof the liquid from the outer impellers to which the delivery of theliquid has been arrested, will create a suction, and a conduit in whichthe said suc- 7. An apparatus of the character described embodying acasing having a chamber, a rotor in said chamber, said rotor embodying aseries of impellers, a second series of impellers encompassing an spacedfrom the said irst series to form an annular space therebetween, both ofthe said, series of impellers rotatingin unison and having a permanentfixed position with relationv to each other, whereby the inner series ofimpellers will deliver fluid .to the outer series, means for temporarilyarresting the delivery of the liquid from the inner series of impellersto certain of the outer series of impellers, provisions whereby the Howof the liquid from the outer impellers to which the delivery of theliquid has been arrested, will create a suction, and a conduit in whichthe said suction will be manifested, the said provisions embodying abaiie arranged adjacent the said conduit within the said space andextending for a short distance in a general direction about the aXis ofrotation of the rotor,

8. An apparatus of the character described embodying a rotary impeller,said impeller embodying a series of impeller blades, a

`second `series of impeller blades encompass'- ing and spaced from thelirst recited series, a fluid conduit, said conduit having communicationwith the space between the said series of impeller blades whereby theliquid delivered from the outer series of blades will y embodying aseries of impeller blades encompassing and spaced from the first recitedseries, said series of blades having a constant position with respect toeach other and being simultaneously rotatable, a fluid conduit, saidconduit having communication with the space between the said series ofimpeller blades whereby the liquid delivered from the outer series ofblades .will create a suction in the conduit, and a volute shapedpassage having its inlet adjacent the path of movement of the impellerfor receiving the liquid therefrom, the movement of the liquid throughthe saidv volute shaped passage operating to create an additionalsuction in the said conduit.

In testimony whereof I have signed my name to this speciiicationon this21st day of March, A. D. 1919.

BENJAMIN SKIDMORE, JR.

